20124212210642 has 64 divisors (see below), whose sum is σ = 33247309455360. Its totient is φ = 9100866614400.

The previous prime is 20124212210563. The next prime is 20124212210701. The reversal of 20124212210642 is 24601221242102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 686186183 + ... + 686215509.

It is an arithmetic number, because the mean of its divisors is an integer number (519489210240).

Almost surely, 2^{20124212210642} is an apocalyptic number.

20124212210642 is a deficient number, since it is larger than the sum of its proper divisors (13123097244718).

20124212210642 is a wasteful number, since it uses less digits than its factorization.

20124212210642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38807.

The product of its (nonzero) digits is 6144, while the sum is 29.

Adding to 20124212210642 its reverse (24601221242102), we get a palindrome (44725433452744).

The spelling of 20124212210642 in words is "twenty trillion, one hundred twenty-four billion, two hundred twelve million, two hundred ten thousand, six hundred forty-two".